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See Chinese contents: GB/T 41119-2021 GB/T 41119-2021: Non-destructive testing -- Micromagnetic testing -- General principles
This document specifies the test method for stress, structural change, and phase transition of carbon steel and alloy steel materials by using the principle of micromagnetics. This document is applicable to the test of the stress distribution and its state, microstructure changes, and structural changes of carbon steel, alloy steel, and austenitic stainless steel; for the test of other metal materials, it can be used as a reference.
